Driveshaft with exhaust sealant on it - what are the repercussions?

[Rob]

I recently had an exhaust issue which required the use of some exhaust sealant to do a very quick and dirty fix until my new mufflers arrived. Unfortunately, my mechanic who normally is meticulous, made a big whoopsie. He got a smattering of sealant on my driveshaft. It's not very thick but you can feel the bumps and there but there are a few small 1/4" clumps. There is no way to get it off. I don't plan on driving 120+ MPH on a regular basis, but for sub 100 mph, how worried should I be?

http://i854.photobucket.com/albums/ab103/SpecterRob/Marauder/Marauderdriveshaftwithexhausts ealant2013-09-11004.jpg (http://s854.photobucket.com/user/SpecterRob/media/Marauder/Marauderdriveshaftwithexhausts ealant2013-09-11004.jpg.html)

http://i854.photobucket.com/albums/ab103/SpecterRob/Marauder/Marauderdriveshaftwithexhausts ealant2013-09-11007.jpg (http://s854.photobucket.com/user/SpecterRob/media/Marauder/Marauderdriveshaftwithexhausts ealant2013-09-11007.jpg.html)

[Comin' in Hot]

I would think you would feel it if its out of balance

[fastblackmerc]

Scrape or grind it off.

[Mr. Man]

Shouldn't be a problem at highway speeds but why can't it be scr aped off. Might need a bit of elbow grease but a good sharp utility blade and a paint scraper should get it off. Just take your time.

By the way if your drive shaft is the stocker I'd be careful at excess speed as not all of them came out of the factory very balanced. If the harmonic wobble gets to bad you risk the failure of the tail shaft and that is a bad thing. :)

[fastblackmerc]

By the way if your drive shaft is the stocker I'd be careful at excess speed as not all of them came out of the factory very balanced. If the harmonic wobble gets to bad you risk the failure of the tail shaft and that is a bad thing. :)

Only at excessively high speeds (100+) for long periods of time.

[MOTOWN]

By the way if your drive shaft is the stocker I'd be careful at excess speed as not all of them came out of the factory very balanced. If the harmonic wobble gets to bad you risk the failure of the tail shaft and that is a bad thing. :)

This is the most overrated misinformation on this site! there is absolutely nothing wrong with the Marauder drive shaft!

The problem with vibration comes into play when the oem trans slip yoke goes south due to the built in damper on it failing because the rubber ring fails, not the drive shaft its self.

[RF Overlord]

I beg to differ...or rather Jerry Wroblewski begs to differ.

For those who aren't familiar with him, Jerry is the "J" in J-mod and was a driveline engineer for Ford for many years, before join Superchips Custom Tuning.

Jerry wrote a very detailed article about the problem, which is not one of balance, but of resonance. At a certain speed, the driveshaft reaches what is called Driveline Critical Speed and begins to flex. The flexing can be severe enough to ruin the bushing in the tailshaft if allowed to continue. Again, this has nothing to do with static balance.

I'll try to find the article and post it.

*EDIT* Here (http://www.mercurymarauder.net/forums/showthread.php?t=5163) it is. Note that although it was posted by Dennis Reinhart, it was written by Jerry.

[fastblackmerc]

This is the most overrated misinformation on this site! there is absolutely nothing wrong with the Marauder drive shaft!

The problem with vibration comes into play when the oem trans slip yoke goes south due to the built in damper on it failing because the rubber ring fails, not the drive shaft its self.


I beg to differ...or rather Jerry Wroblewski begs to differ.

For those who aren't familiar with him, Jerry is the "J" in J-mod and was a driveline engineer for Ford for many years, before join Superchips Custom Tuning.

Jerry wrote a very detailed article about the problem, which is not one of balance, but of resonance. At a certain speed, the driveshaft reaches what is called Driveline Critical Speed and begins to flex. The flexing can be severe enough to ruin the bushing in the tailshaft if allowed to continue. Again, this has nothing to do with static balance.

I'll try to find the article and post it.

*EDIT* Here (http://www.mercurymarauder.net/forums/showthread.php?t=5163) it is. Note that although it was posted by Dennis Reinhart, it was written by Jerry.

I have 4.10's for over 60K miles and a stock driveshaft. I go north of 100mph alot... just not for a long time.

[MOTOWN]

I beg to differ...or rather Jerry Wroblewski begs to differ.

For those who aren't familiar with him, Jerry is the "J" in J-mod and was a driveline engineer for Ford for many years, before join Superchips Custom Tuning.

Jerry wrote a very detailed article about the problem, which is not one of balance, but of resonance. At a certain speed, the driveshaft reaches what is called Driveline Critical Speed and begins to flex. The flexing can be severe enough to ruin the bushing in the tailshaft if allowed to continue. Again, this has nothing to do with static balance.

I'll try to find the article and post it.

*EDIT* Here (http://www.mercurymarauder.net/forums/showthread.php?t=5163) it is. Note that although it was posted by Dennis Reinhart, it was written by Jerry.

What i am saying is that there is nothing wrong with the Marauder drive shafts at high speeds! and how many people have broke one due to high horse powahh:confused:

the weak link in the oem shaft is the tran slip yoke, a plain and simple fact, most who say there oem shaft is out of balance normally need to replace the oem slip yoke/and or ujoints.

[justbob]

Everything in life is removable. At least that's what my Italian father law told me?


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

[lji372]

Everything in life is removable. At least that's what my Italian father law told me?


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

:lol:

I'm stock, have been 130 a number of times, never for extended periods. I want to keep my license and not go to jail:D

Never noticed an issue with mine, lucky I guess.

Back to op's question: I would use a 60 or 120 grit disk and grind it off. Nothing to sweat about:beer:

[Granddaddy Marq]

Everything in life is removable. At least that's what my Italian father law told me?


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

Ya that's what this Italian father told his sons in law too. His a good man.

Hey Bob How's your slip yoke holding up? I remember yours got a little out of balance not to long a go.

[justbob]

Ya that's what this Italian father told his sons in law too. His a good man.

Hey Bob How's your slip yoke holding up? I remember yours got a little out of balance not to long a go.

So far so good but felt a very small amount of driveline feel tonight. Hard to describe other than feeling all ponies transmitting to the rear under very hard 2nd and 3rd or even slight flat tire feeling, not the normal smoothness. I'll probably have the pretty wife drop the shaft off Friday and have the balance rechecked for safe measure, maybe even have yet another one built as a back up. The drive to Atlanta and beating her up while down is quite frankly scaring me is all probably...


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

[Vortech347]

Sand it down.

Also, having your driveshaft balanced is REALLY cheap if you think you need it. I just had an aluminum driveshaft cut to a custom length and balanced for 95$

[Rob]

Thanks guys. I will 'try' to sand it down. If anyone has used that exhaust sealant, it looks and feels like JB weld. It's not like it's a horrible clumpy mess, but it really bugged me when I saw it. I didn't say anything because he did my exhaust work for free since it was a quickie weld and patch.

I don't think I felt any unusual vibrations on the highway but then again, I never really paid attention to every little wiggle. Between the highway rhythm, tires and exhaust rumble she makes her own vibrations. My normal max speed is usually 90'ish and not for any length of time. Hey, sometimes traffic just moves. :burnout:

I'll do what I can to get rid of it and see if I can find a place to balance it regardless. Anyone know of a place in New England, preferably near eastern Mass?

Thanks again,

Rob

[fastblackmerc]

Thanks guys. I will 'try' to sand it down. If anyone has used that exhaust sealant, it looks and feels like JB weld. It's not like it's a horrible clumpy mess, but it really bugged me when I saw it. I didn't say anything because he did my exhaust work for free since it was a quickie weld and patch.

I don't think I felt any unusual vibrations on the highway but then again, I never really paid attention to every little wiggle. Between the highway rhythm, tires and exhaust rumble she makes her own vibrations. My normal max speed is usually 90'ish and not for any length of time. Hey, sometimes traffic just moves. :burnout:

I'll do what I can to get rid of it and see if I can find a place to balance it regardless. Anyone know of a place in New England, preferably near eastern Mass?

Thanks again,

Rob
Check with places that repair heavy equipment / trucks, they can either do it or send them out.

[fireandice9008]

Honestly I wouldn't worry about it. BUT, if you want to get it off, without taking metal with it, try a product (if you can get it) called Jasco. It's paint and epoxy stripper on steroids that may have a coke problem. Basically, it's good. Just don't get it on you :flamer:

[Vortech347]

Thanks guys. I will 'try' to sand it down. If anyone has used that exhaust sealant, it looks and feels like JB weld. It's not like it's a horrible clumpy mess, but it really bugged me when I saw it. I didn't say anything because he did my exhaust work for free since it was a quickie weld and patch.

I don't think I felt any unusual vibrations on the highway but then again, I never really paid attention to every little wiggle. Between the highway rhythm, tires and exhaust rumble she makes her own vibrations. My normal max speed is usually 90'ish and not for any length of time. Hey, sometimes traffic just moves. :burnout:

I'll do what I can to get rid of it and see if I can find a place to balance it regardless. Anyone know of a place in New England, preferably near eastern Mass?

Thanks again,

Rob

Sanding disk on an air grinder will take it off nicely.